// Fila da secretária humana: pedidos de horário da ZONA CINZA que a Secretária IA
// registrou ("vou confirmar e retorno"). A humana confirma (vira agendamento) ou
// recusa. Consome /api/nw/agenda-config/clinica/:id/pedidos*.
import React, { useState, useEffect, useCallback } from 'react';
import { X, CalendarClock, Check, Ban, Loader2, Phone, User, HelpCircle } from 'lucide-react';

const API = (import.meta as any).env?.VITE_API_URL || '/api';
const BASE = `${API}/nw/agenda-config`;

async function req(path: string, opts: RequestInit = {}) {
  const token = localStorage.getItem('SCOREODONTO_AUTH_TOKEN');
  const res = await fetch(`${BASE}${path}`, { ...opts, headers: { 'Content-Type': 'application/json', ...(token ? { Authorization: `Bearer ${token}` } : {}), ...(opts.headers || {}) } });
  const t = await res.text(); const d = t ? JSON.parse(t) : {};
  if (!res.ok) throw new Error(d.error || `Erro ${res.status}`);
  return d;
}

const dm = (s: string) => s ? s.split('-').reverse().join('/') : s;

export const PedidosPendentes: React.FC<{ isOpen: boolean; onClose: () => void; clinicaId?: string; onChange?: () => void }> = ({ isOpen, onClose, clinicaId, onChange }) => {
  const [pedidos, setPedidos] = useState<any[]>([]);
  const [dentistas, setDentistas] = useState<any[]>([]);
  const [sel, setSel] = useState<Record<string, string>>({}); // pedido_id → dentista_id escolhido
  const [busy, setBusy] = useState<string | null>(null);
  const [erro, setErro] = useState<string | null>(null);
  const [loading, setLoading] = useState(false);

  const carregar = useCallback(async () => {
    if (!clinicaId) return;
    setLoading(true); setErro(null);
    try {
      const p = await req(`/clinica/${clinicaId}/pedidos?status=pendente`);
      setPedidos(p.pedidos || []);
      const d = await req(`/clinica/${clinicaId}/dentistas`);
      setDentistas(d.dentistas || []);
    } catch (e: any) { setErro(e.message); } finally { setLoading(false); }
  }, [clinicaId]);

  useEffect(() => { if (isOpen) carregar(); }, [isOpen, carregar]);

  const confirmar = async (p: any) => {
    const dentistaId = p.dentista_id || sel[p.id];
    if (!dentistaId) { setErro('Escolha o dentista para confirmar.'); return; }
    setBusy(p.id); setErro(null);
    try { await req(`/clinica/${clinicaId}/pedidos/${p.id}/confirmar`, { method: 'POST', body: JSON.stringify({ dentista_id: dentistaId }) }); await carregar(); onChange?.(); }
    catch (e: any) { setErro(e.message); } finally { setBusy(null); }
  };
  const recusar = async (p: any) => {
    setBusy(p.id); setErro(null);
    try { await req(`/clinica/${clinicaId}/pedidos/${p.id}/recusar`, { method: 'POST' }); await carregar(); onChange?.(); }
    catch (e: any) { setErro(e.message); } finally { setBusy(null); }
  };
  const resolver = async (p: any) => {
    setBusy(p.id); setErro(null);
    try { await req(`/clinica/${clinicaId}/pedidos/${p.id}/resolver`, { method: 'POST' }); await carregar(); onChange?.(); }
    catch (e: any) { setErro(e.message); } finally { setBusy(null); }
  };

  if (!isOpen) return null;
  return (
    <div className="fixed inset-0 bg-black/60 z-[70] flex items-center justify-center backdrop-blur-md p-0">
      <div className="bg-white shadow-2xl w-full h-dvh md:w-[92vw] md:max-w-3xl md:h-[90vh] rounded-none md:rounded-[2rem] flex flex-col overflow-hidden border border-gray-100">
        <div className="px-8 py-6 border-b border-gray-50 flex justify-between items-center bg-gradient-to-br from-gray-50 to-white">
          <div className="flex items-center gap-3">
            <div className="p-2.5 bg-amber-500 rounded-2xl shadow-lg shadow-amber-200"><CalendarClock size={22} className="text-white" /></div>
            <div>
              <h2 className="text-lg font-black text-gray-900 uppercase tracking-tighter">Pedidos aguardando confirmação</h2>
              <p className="text-[10px] font-bold text-gray-400 uppercase tracking-widest mt-0.5">Horários fora do padrão que a Secretária IA encaminhou</p>
            </div>
          </div>
          <button onClick={onClose} className="p-2 hover:bg-gray-100 rounded-xl text-gray-400"><X size={22} /></button>
        </div>

        {erro && <div className="px-8 py-2 text-xs font-bold bg-red-50 text-red-600">{erro}</div>}

        <div className="flex-1 overflow-y-auto p-6 space-y-3">
          {loading ? (
            <div className="flex items-center justify-center py-16"><Loader2 size={22} className="animate-spin text-gray-400" /></div>
          ) : pedidos.length === 0 ? (
            <p className="text-center text-sm text-gray-400 py-16">Nenhum pedido pendente. 🎉</p>
          ) : pedidos.map((p) => p.tipo === 'duvida' ? (
            <div key={p.id} className="border-2 border-indigo-100 rounded-2xl p-4 bg-indigo-50/40">
              <div className="flex items-start justify-between gap-3 flex-wrap">
                <div className="space-y-1.5 max-w-[75%]">
                  <div className="flex items-center gap-1.5 text-[10px] font-black text-indigo-600 uppercase tracking-widest"><HelpCircle size={13} /> Dúvida p/ decidir</div>
                  <div className="text-sm font-bold text-gray-800 leading-snug whitespace-pre-wrap">{p.resumo}</div>
                  <div className="flex items-center gap-2 text-xs text-gray-600 font-bold"><User size={13} className="text-gray-400" /> {p.paciente_nome || 'Cliente'}
                    {p.paciente_telefone && <span className="flex items-center gap-1 text-gray-400"><Phone size={12} /> {p.paciente_telefone}</span>}</div>
                </div>
                <div className="flex gap-2">
                  <button onClick={() => resolver(p)} disabled={busy === p.id}
                    className="bg-indigo-600 hover:bg-indigo-700 text-white text-[11px] font-black uppercase px-3 py-1.5 rounded-xl flex items-center gap-1 disabled:opacity-50">
                    {busy === p.id ? <Loader2 size={13} className="animate-spin" /> : <Check size={13} />} Resolvida
                  </button>
                  <button onClick={() => recusar(p)} disabled={busy === p.id}
                    className="bg-gray-100 hover:bg-red-50 text-gray-500 hover:text-red-600 text-[11px] font-black uppercase px-3 py-1.5 rounded-xl flex items-center gap-1">
                    <Ban size={13} /> Descartar
                  </button>
                </div>
              </div>
            </div>
          ) : (
            <div key={p.id} className="border border-gray-200 rounded-2xl p-4 bg-white">
              <div className="flex items-start justify-between gap-3 flex-wrap">
                <div className="space-y-1">
                  <div className="text-sm font-black text-gray-800">
                    {dm(p.data)} às {p.hora_inicio}{p.hora_fim ? `–${p.hora_fim}` : ''}
                  </div>
                  <div className="flex items-center gap-2 text-xs text-gray-600 font-bold"><User size={13} className="text-gray-400" /> {p.paciente_nome || 'Cliente'}
                    {p.paciente_telefone && <span className="flex items-center gap-1 text-gray-400"><Phone size={12} /> {p.paciente_telefone}</span>}</div>
                  {p.procedimento && <div className="text-[11px] text-gray-500">{p.procedimento}</div>}
                </div>
                <div className="flex flex-col items-end gap-2">
                  {p.dentista_id ? (
                    <span className="text-[11px] font-bold text-teal-600">{p.dentista_nome}</span>
                  ) : (
                    <select value={sel[p.id] || ''} onChange={(e) => setSel({ ...sel, [p.id]: e.target.value })}
                      className="bg-gray-50 border-2 border-transparent focus:border-teal-600 rounded-xl px-2 py-1.5 text-xs font-bold text-gray-800 outline-none">
                      <option value="">Escolher dentista…</option>
                      {dentistas.map((d) => <option key={d.id} value={d.id}>{d.nome}</option>)}
                    </select>
                  )}
                  <div className="flex gap-2">
                    <button onClick={() => confirmar(p)} disabled={busy === p.id}
                      className="bg-emerald-600 hover:bg-emerald-700 text-white text-[11px] font-black uppercase px-3 py-1.5 rounded-xl flex items-center gap-1 disabled:opacity-50">
                      {busy === p.id ? <Loader2 size={13} className="animate-spin" /> : <Check size={13} />} Confirmar
                    </button>
                    <button onClick={() => recusar(p)} disabled={busy === p.id}
                      className="bg-gray-100 hover:bg-red-50 text-gray-500 hover:text-red-600 text-[11px] font-black uppercase px-3 py-1.5 rounded-xl flex items-center gap-1">
                      <Ban size={13} /> Recusar
                    </button>
                  </div>
                </div>
              </div>
            </div>
          ))}
        </div>
      </div>
    </div>
  );
};